The road to the White House officially kicked off in 2015, as more than a dozen Republican candidates launched presidential campaigns. 

From Donald Trump's biggest fan to Rand Paul literally destroying the tax code, the past year had its fair share of memorable moments.

As we get set to usher in 2016, let's take a look back at some of them...

Remember to mark your calendars because Fox News Channel and Fox Business Network will soon bring you two more crucial debates ahead of the Iowa Caucus.

January 14th - Fox Business Network GOP debate from North Charleston, South Carolina.

January 28th - Fox News Channel GOP debate, hosted by Megyn Kelly, Bret Baier and Chris Wallace, from Des Moines, Iowa.

Rand Paul touted his plan for a one-page tax return by burning, wood-chipping and chain-sawing the 70,000 pages of the current tax code.

Donald Trump welcomed a Hispanic woman onto the stage at a rally in Las Vegas. He gave her a hug as she yelled "I'm Hispanic and I vote for Mr. Trump. We love you!"

... that moment came a few months after Trump made headlines for booting Univision reporter Jorge Ramos out of a press conference.

Sen. Ted Cruz scored big on social media when he hit back at a Washington Post cartoon that depicted his young daughters as monkeys. 

His response...

Sen. Marco Rubio drew huge cheers by simply announcing to the Values Voters Summit that then-House Speaker John Boehner would be stepping down. 

Ben Carson delivered a memorable closing statement at the Fox News debate in August, joking that he's the only candidate who's separated Siamese twins.

Jeb Bush went toe-to-toe with Donald Trump in the most memorable moment of the Dec. 15 debate, declaring that the billionaire frontrunner is a "chaos candidate."

Mike Huckabee vocally supported a Kentucky county clerk who was jailed for refusing to issue marriage licenses to gay couples. 

Huckabee spoke after Kim Davis was released, declaring that he'd "go to jail in her place."

Chris Christie had enough after listening to Trump and Carly Fiorina go back and forth about their careers as business leaders. 

"[The American people] could care less about your careers. They care about theirs," Christie said, yelling at the two candidates to stop the "childish" argument.

Carly Fiorina got a huge response at a debate in September when she dared Hillary Clinton and President Obama to watch the Center for Medical Progress' Planned Parenthood videos.

John Kasich clashed with Trump on the issue of illegal immigration at the FBN debate in November, arguing that his deportation plan was not "an adult" proposal.

What do you think was the moment of the year on the campaign trail?

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